ZeroMQ 官方地址 ：http://api.zeromq.org/4-0:zmq_ctx_shutdown
zmq_ctx_shutdown(3) ØMQ Manual - ØMQ/4.1.0
Name
zmq_ctx_shutdown - 停止一个ZMQ context
Synopsis
int zmq_ctx_shutdown (void *context);
Description
zmq_ctx_shutdown() 函数会停止ZMQ 环境上下文context。
停止context会立刻引起当前所有基于context创建的scoket的阻塞调用返回，并使其返回错误代码ETERM。除了zmq_close() 意外，对所有基于context创建的socket进行更深入的调用都会失败并返回错误代码ETERM。
这个函数是可选的，客户端仍然会调用zmq_ctx_term(3)函数释放zeromq分配的所有资源。
Return value
函数zmq_ctx_shutdown()调用成功会返回0。否则返回 -1，并且把errno设置为下列定义的值。
Errors
EFAULT
参数提供的context无效。
See also
zmq(7) zmq_init(3) zmq_ctx_term(3) zmq_close(3) zmq_setsockopt(3)
Authors
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